Wireless Door Infrared Bell Alarm.Fits onto your shed, garage, barn door or window.For Shed Garage ,Caravan Security Keypad Alarm.Loud alarm signal: . 110 dB siren.Adjustable security pin code operation3 x AA battery operated (not supplied)3 settings: Instant, Delay & ChimeInstant Setting: 110 decibel siren will sound immediately until security code is enteredDelay Setting: 10 second delay to enter security code before 110 decibel siren is soundedChime Setting: To alert you when a guest enters, or as a warning if a young person opens the doorProcess for Code setups:Set your own code by first pressing the unit's default code: " 0000 + * ",Now enter your own code by pressing for example: " 123 + * "To arm: press 123 + red light comes on for 10 secondsTo disarm: press 123 + TWICE!!Red light then flashes for 10 seconds and the unit is closed down.Name: AlarmWorking voltage: 4.5 VScope of application: door and window anti-theft alarmModel: MM-1colour:WhiteMaterial:ABSPackage Contents:1 x Wireless Door Alarm(with installing wire)Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.